https://www.3dbrew.org/w/index.php?action=history&feed=atom&title=FSPXI%3AWriteFileSHA256 2026-04-15T12:51:19Z Revision history for this page on the wiki MediaWiki 1.43.1 https://www.3dbrew.org/w/index.php?title=FSPXI:WriteFileSHA256&diff=21875&oldid=prev 2022-06-05T18:30:59Z

<p>Created page with &quot;=Request= {| class=&quot;wikitable&quot; border=&quot;1&quot; |- ! Index Word ! Description |- | 0 | Header code [0x004E0204] |- | 1 | File handle lower word |- | 2 | File handle upper word |-...&quot;</p> <p><b>New page</b></p><div>=Request=<br /> {| class=&quot;wikitable&quot; border=&quot;1&quot;<br /> |-<br /> ! Index Word<br /> ! Description<br /> |-<br /> | 0<br /> | Header code [0x004E0204]<br /> |-<br /> | 1<br /> | File handle lower word<br /> |-<br /> | 2<br /> | File handle upper word<br /> |-<br /> | 3<br /> | Offset lower word<br /> |-<br /> | 4<br /> | Offset upper word<br /> |-<br /> | 5<br /> | Size of write buffer<br /> |-<br /> | 6<br /> | Alignment size (always 0x00001000)<br /> |-<br /> | 7<br /> | Size of hashtable<br /> |-<br /> | 8<br /> | Flush flags<br /> |-<br /> | 9<br /> | (size of hashtable &lt;&lt; 8) &lt;nowiki&gt;|&lt;/nowiki&gt; 6<br /> |-<br /> | 10<br /> | Pointer to hashtable<br /> |-<br /> | 11<br /> | (size of write buffer &lt;&lt; 8) &lt;nowiki&gt;|&lt;/nowiki&gt; 0x14<br /> |-<br /> | 12<br /> | Pointer to write buffer<br /> |}<br /> <br /> =Response=<br /> {| class=&quot;wikitable&quot; border=&quot;1&quot;<br /> |-<br /> ! Index Word<br /> ! Description<br /> |-<br /> | 0<br /> | Header code<br /> |-<br /> | 1<br /> | Result code<br /> |-<br /> | 2<br /> | Size written<br /> |-<br /> | 3<br /> | 4<br /> |}<br /> <br /> The data written are stored in the write buffer. For each 0x1000-byte block written, a SHA256 hash of the block is stored in the hashtable.<br /> <br /> It is unknown how hashing behaves if the write offset/size are not aligned to a 0x1000-byte boundary.</div>

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